Feelin. Discouraged.. Like what did I get myself into..

Is anyone else feeling a little discouraged? I wanted a baby with my husband for two years now. Now that I'm finally pregnant (11 weeks) I'm feeling discouraged. I feel like we should have waited. I'm physically feeling sick all the time and I can't sleep. To be quite honest I feel a little miserable. I do have moments where I'm happy to have a little one inside me growing but then I feel like I wasn't ready. Maybe I'm just emotional. Idk but I all I want is to feel happy.